Journal of the International Neuropsychological Society

Evaluating the utility of ICD-10 diagnostic criteria for postconcussion syndrome following mild traumatic brain injury

a1 Department of Psychology, University of Windsor, Windsor, Ontario, Canada
a2 Department of Psychology Services, Glenrose Rehabilitation Hospital, Edmonton, Alberta, Canada

Article author query
kashluba s   [PubMed][Google Scholar] 
casey je   [PubMed][Google Scholar] 
paniak c   [PubMed][Google Scholar] 


The present study investigated the utility of the International Classification of Diseases and Related Health Problems, 10th edition (ICD-10) diagnostic criteria for postconcussion syndrome (PCS) symptoms by comparing symptom endorsement rates in a group of patients with mild traumatic brain injury (MTBI) to those of a noninjured control group at one month and three months post-injury. The 110 MTBI patients and 118 control participants were group-matched on age, gender, and education level. Seven of the nine self-reported ICD-10 PCS symptoms differentiated the groups at one month post-injury and two symptoms differentiated the groups at three months post-injury: symptom endorsement rates were higher in the MTBI group at both time periods. Fatiguing quickly and dizziness/vertigo best differentiated the groups at both time periods, while depression and anxiety/tension failed to differentiate the groups at either time period. Collectively, the ICD-10 PCS symptoms accurately classified the MTBI patients at one month post-injury, with the optimal positive test threshold of endorsement of five symptoms coinciding with a sensitivity and specificity of 73% and 61%, respectively. The ICD-10 PCS symptoms were unable to accurately classify the MTBI patients at three months post-injury. (JINS, 2006, 12, 111–118.)

(Received June 7 2005)
(Revised September 7 2005)
(Accepted September 8 2005)

Key Words: Longitudinal; Control group; Symptoms; Follow-up; Diagnostic criteria; Adult.

c1 Address correspondence to: Joseph E. Casey, Department of Psychology, University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada N9B 3P4. E-mail: